Need Engine Pricing Help

I have an engine that I need to sell, but have no idea what to list it for. Here are the specs:

Original 1966 289, rebuilt in 2004
- I don't know the exact mileage, but based on past records I have, there are less than 5K miles on it
- Bored 30 over with SBF Flat Top Cast Pistons
- GT40P heads
- Edlebrock Performer intake
- Edlebrock 1403 carb (500cfm)
- I'm not sure what type of cam is in it, but I know there is has a .050 lift.
- I'm pretty sure there are HiPo exhaust manifolds on it. I have a receipt for HiPo's from a previous owner, but I'm not sure they are actually HiPo's on the car.
- It runs really well and has no leaks.

If there are any other specs you need to take a guess as to what this engine is worth, let me know.

Thanks for any advice anyone can provide.

Scott

I can do ya one better http://www.youtube.com/watch?v=izzK0OtWxdY

I have straight exhaust manifolds on it right now bc of exhaust clearance with the R&P I just put in it.

The engine was in the car when I bought it, but I do have some of the receipts when the engine was rebuilt back in 2004. That's how I know what kind of pistons are in it and that it was bored .030 over. Unfortunately, it doesn't have any information about the cam, other than a spec test that was done on it after it was built. That's how I knew the lift in it and such.